======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '270'
                                          'artist'  'Morning, Noon & Night'
                                     'text_people'  ''
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                                           'title'  'Le Joint'
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                                     'discogstags'  "['funk / soul', 'funk', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '18'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '115.1'
                                             'key'  '11A'
                                        'acoustid'  'fbbc8039-a24b-4233-b325-33ee7ac8f03c'
rest: ''

======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '115.1'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Le Joint'
'TKEY' (Initial key)                                '11A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Morning, Noon & Night'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '3/5'
'TPUB' (Publisher)                                  'Disky'
'TRCK' (Track number/Position in set)               '14/18'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Morning, Noon & Night'
'TXXX:ASIN'                                         'B000050GHJ'
'TXXX:Acoustid Id'                                  'fbbc8039-a24b-4233-b325-33ee7ac8f03c'
'TXXX:Artists'                                      'Morning, Noon & Night'
'TXXX:BARCODE'                                      '0724389921922'
'TXXX:CATALOGNUMBER'                                'BX 992202/BX 992212/BX 992222/BX 992232/BX 992242/DB 992192'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '27c3ac59-591e-33a1-a9ce-ebaac4975a1a'
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'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
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'TXXX:MusicBrainz Release Track Id'                 'f4b7cba2-ddf6-3415-8763-1ed0ad27c779'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['funk / soul', 'funk', 'disco']
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'TXXX:fBPMQuality'                                  '0.000000'
'TXXX:lastfmtags'                                   ['jazz', 'soul', '70s', 'funk', 'funky']
'TXXX:originalyear'                                 '2000'
'TXXX:other'                                        '77'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
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'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
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'TXXX:replaygain_track_gain'                        '+2.07 dB'
'TXXX:replaygain_track_peak'                        '0.444933'
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========================== row from database ==========================
                                              'id'  1533832
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/funkin_ on the one/50 Morning Noon and Night - 77 Le Joint.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  270
                                           'genre'  funk or soul
                                        'filesize'  4402656
                                           'mtime'  1628357681
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul funkin_ one 50 and 77 funk soul
                                      'tag_artist'  Morning, Noon & Night
                                     'tag_release'  Funkin' on the 1
                                       'tag_title'  Le Joint
                                             'bpm'  115.1
                                    'search_title'  'joint':2 'le':1
                                   'search_artist'  'morning':1,2 'night':4 'noon':3
                                  'search_release'  '1':5 'funkin':1,2 'on':3 'the':4
                                     'search_rest'  '50':6 '77':8 'and':7 'funk':2 'funkin':4 'one':5 'soul':3 'swing':1
                                    'search_combo'  '1':11C '50':17 '77':19 'and':18 'funk':13 'funkin':7C,8C,15 'joint':2A 'le':1A 'morning':3B,4B 'night':6B 'noon':5B 'on':9C 'one':16 'soul':14 'swing':12 'the':10C
                                    'tag_tracknum'  14
                                      'num_images'  1
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'soul', '70s', 'funk', 'funky']
                                        'tag_date'  2000
                                     'discogstags'  ['funk / soul', 'funk', 'disco']

============================== file details ==============================
                                           'mtime'  1628357681.1753793  (2021-08-07 19:34:41)
                             'size'  4402656